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Marine Biology

, Volume 158, Issue 4, pp 723–735 | Cite as

Morphology and distribution of the ampullary electroreceptors in wobbegong sharks: implications for feeding behaviour

  • Susan M. TheissEmail author
  • Shaun P. Collin
  • Nathan S. Hart
Original Paper

Abstract

The electrosensory capabilities of wobbegong sharks are of particular interest, partly because very little is known about their behavioural ecology and specifically because of their unusual ambush predatory strategy and benthic lifestyle. While several biological functions of electroreception have been proposed, less consideration has been given to the functional significance of interspecific differences in the morphology and topographic distribution of the ampullary organs. The morphology of the ampullary organs was examined in four species of wobbegong shark, and the distribution of electroreceptive pores was mapped in two species. The ampullary systems of wobbegongs are similar in morphology to other marine elasmobranchs. The number of alveoli per ampullae is not significantly different between the four species; however, differences are seen between ampullary cell size in some species. Ampullary pore distribution patterns are relatively unique, with the majority of pores occurring on the dorsal region of the head. Wobbegongs feed primarily on demersal teleost fishes, and as the benthic and well-camouflaged wobbegong remains motionless, these fish could be easily detected by the dorsal pores when swimming within range.

Keywords

Primary Cilium Sensory Epithelium Cell Surface Area Prey Detection Elasmobranch Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors would like to thank John Page, Jamie Thornton, Bob Stone and Darren Sapelli for help with animal collection, and to Barbara Wueringer and Carla Atkinson for help with laboratory work. Many thanks also go to Dr Charlie Huveneers, Joanna Stead, Justin Chidlow and Dr Shannon Corrigan for several useful discussions about the biology, ecology and phylogeny of wobbegong sharks. Funding was supplied by a University of Queensland (UQ) International Research Award and UQ International Living Allowance Scholarship to SMT, an Australian Research Council (ARC) Discovery Project Grant (DP0558681) and an ARC Linkage grant (LP0214956).

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Susan M. Theiss
    • 1
    Email author
  • Shaun P. Collin
    • 1
    • 2
  • Nathan S. Hart
    • 1
    • 2
  1. 1.School of Biomedical SciencesThe University of QueenslandBrisbaneAustralia
  2. 2.School of Animal BiologyThe University of Western AustraliaPerthAustralia

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